Optical fiber lamp base



FIG. 1 is a perspective view of an optical fiber lamp base showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left end view thereof;

FIG. 4 is a right end view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is another perspective view thereof wherein artificial flowers are shown in broken lines for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an optical fiber lamp base, as shown and described. 